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20w T4 fluorescent tube (warm white 578mm inc pins, 568mm excl pins) CHECK LENGTH CAREFULLY by Leyton Lighting product : Amazon.co.uk: Lighting
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GE 40399 - 20 Watt - T4 - ConstantColor - Pulse Start - Metal Halide - Unprotected Arc Tube - 3000K - GU6.5 Base - ANSI M156/E - Universal Burn - CMH20T/U830GU6.5 - Amazon.com
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